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Semi empirical models for selectivity of supercritical carbon dioxide for solid mixtures

Reddy, Sivamohan N and Madras, Giridhar (2012) Semi empirical models for selectivity of supercritical carbon dioxide for solid mixtures. In: Separation and Purification Technology, 89 . pp. 181-188.

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Official URL: http://dx.doi.org/10.1016/j.seppur.2012.01.029


Selectivity of the particular solvent to separate a mixture is essential for the optimal design of a separation process. Supercritical carbon dioxide (SCCO2) is widely used as a solvent in the extraction, purification and separation of specialty chemicals. The effect of the temperature and pressure on selectivity is complicated and varies from system to system. The effect of temperature and pressure on selectivity of SCCO2 for different solid mixtures available in literature was analyzed. In this work, we have developed two model equations to correlate the selectivity in terms of temperature and pressure. The model equations have correlated the selectivity of SCCO2 satisfactorily for 18 solid mixtures with an average absolute relative deviation (AARD) of around 5%. (C) 2012 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Publication: Separation and Purification Technology
Publisher: Elsevier Science
Additional Information: Copyright of this article is belongs to Elsevier Science.
Keywords: Selectivity;Supercritical;Solid mixture;Association model; Activity coefficient model
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 14 Aug 2012 07:33
Last Modified: 14 Aug 2012 07:34
URI: http://eprints.iisc.ac.in/id/eprint/44510

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